Doh! Yes, I misread that. 



On Tue, Mar 29, 2016 at 9:10 AM, Tom Stepleton <stepleton@gmail.com> wrote:
Have a closer read of the linked page... :-)

--Tom

On Tue, Mar 29, 2016 at 2:08 PM, Jason Perkins <perkins.jason@gmail.com> wrote:
Fantastic news! I found another site mentioning one of these microcontrollers on the Widget disk. Perhaps Dr. Schäfer could use this setup to dump that controller as well? 

-J

On Tue, Mar 29, 2016 at 4:17 AM, Tom Stepleton <stepleton@gmail.com> wrote:
I really must be on the wrong mailing lists!

I assume you have to source a COP402 from eBay or somewhere...

--Tom

On Tue, Mar 29, 2016 at 1:21 AM, James MacPhail <gg_@sigmasevensystems.com> wrote:

The Lisa I/O COPS dump has been preserved here as well:

  http://segher.ircgeeks.net/COPS/

Using that code dump, a successful plug-in replacement for the Lisa's COPS has been built based on the romless COP402. I expect production units will be available soon.

This design does have its drawbacks... it isn't low power, so it won't keep time for long when running from a battery (when power is disconnected from the Lisa). However, since most of us don't have a battery on the Lisa I/O board anymore anyway, this likely isn't an issue for most people.

James


As far as I know, the mask ROMs in the COP421s were basically the
last bit of code in the Lisa's hardware that hadn't been preserved
on modern media.

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